››Lock your SIM or Usim card

Set an unlock password

1 In the application list, select Settings → Lock screen →

Screen lock → Password.

2 Enter a new password (alphanumeric) and select Continue.

3 Enter the password again and select OK.

You can lock your device with the PIN that is supplied with your SIM or USIM card. Once the SIM or USIM lock is enabled, you must enter the PIN each time you turn on the device or access applications that require the PIN.

In the application list, select Settings → Security → Set up SIM card lock → Lock SIM card.

Enter your PIN and select OK.

●● If you enter an incorrect PIN too many times, your SIM or USIM card will be blocked. You must enter a PIN unlock key (PUK) to unblock the SIM or USIM card.

●● If you block your SIM or USIM card by entering an incorrect PUK, take the SIM or USIM card to your service provider to unblock it.

››Activate the Find my mobile feature

When someone inserts a new SIM or USIM card into your lost or stolen device, the Find my mobile feature will send the contact number to your specified recipients automatically, so that you can locate and recover your device. To use this feature, you must create a Samsung account for controlling the device remotely via the Internet.

Getting started

GT-I9300RWDXXV, GT-I9300MBDXXV, GT-I9300ZKAXSG, GT-I9300GREAFR, GT-I9300RWDTHR specifications

The Samsung GT-I9300 series, also known as the Galaxy S3, was released in 2012 and quickly became a hallmark of innovation in the smartphone market. Among the models identified—GT-I9300RWXJED, GT-I9300ZIDTHR, GT-I9300RWXXSG, GT-I9300MBXXSG, and GT-I9300MBDAFR—each variant shares core features while catering to different regional markets.

One of the standout characteristics of the Galaxy S3 is its impressive display. The device sports a 4.8-inch Super AMOLED screen with a resolution of 720 x 1280 pixels, delivering vibrant colors and deep contrast ratios. This display technology enhances the viewing experience whether one is watching videos or scrolling through photos. The sleek design, featuring a plastic body with a curved back, made it both lightweight and easy to hold.

Under the hood, the Galaxy S3 is powered by powerful processors—either the Exynos 4412 or Qualcomm Snapdragon S4, depending on the model. These chipsets, coupled with 1GB of RAM, provide users with the performance needed for multitasking, smoother graphics, and more efficient energy consumption. The device comes with internal storage options ranging from 16GB to 64GB, expandable via microSD, offering ample space for apps, media, and documents.

Another key feature of the Galaxy S3 is its camera. It boasts an 8-megapixel rear camera and a 1.9-megapixel front camera, capable of capturing high-quality images and 1080p video. The camera is equipped with features like autofocus, LED flash, and burst shooting, making it appealing for photography enthusiasts.

From a technological perspective, the Galaxy S3 also showcases advanced features for its time. It introduced Smart Stay, which uses the front camera to keep the screen on while the user is looking at it, and S Voice, Samsung's voice recognition software. Furthermore, it runs on Android 4.0 Ice Cream Sandwich, which can be updated to later versions, providing users access to the latest apps and functionalities.

The device supports 2G, 3G, and 4G LTE modes, depending on the variant, ensuring compatibility with various networks. With its robust design and feature-rich specifications, the Samsung GT-I9300 series set a high benchmark for future smartphones, making it a memorable entry in the competitive world of mobile technology.